Table 1.

Stem statement and items for PD-6* Scale and K6** Scale

PD-6 Scale:	K6 Scale:
"How much trouble have you had with each of these things in the past month?"	"During the past 30 days, how often did you feel ..."
1) feeling blue or down in the dumps or depressed	1) so sad that nothing could cheer you up?
2) feeling nervous, fidgety, tense	2) nervous?
3) being so restless I can't sit still	3) restless or fidgety?
4) feeling hopeless about the future	4) hopeless?
5) having trouble getting myself going	5) that everything was an effort?
6) feeling worthless	6) worthless?

*3-point response scale (0 = not at all, 1 = a little trouble, 2 = a lot of trouble)

** Kessler et al. (2002), K6, 5-point response scale (ranging from 0 = none of the time to 4 = all of the time)